薄膜型LNG液舱中浮式制荡板的数值模拟研究  

Numerical simulation of suppressing floating device in the membrane-type LNG tank

作　　者：于曰旻[1] 范佘明[2] 马宁[1] 

机构地区：[1]上海交通大学船舶海洋与建筑工程学院海洋工程国家重点实验室高新船舶与深海开发装备协同创新中心,上海200240 [2]中国船舶及海洋工程设计研究院上海市船舶工程重点实验室,上海200011

出　　处：《水动力学研究与进展（A辑）》2016年第5期575-579,共5页Chinese Journal of Hydrodynamics

基　　金：国家自然科学基金项目(51279105);教育部;财政部重大科研项目(GKZY010004)~~

摘　　要：薄膜型液舱广泛用于FLNG(浮式液化天然气储存装置)、FSRU(浮式储存和再气化装置)和LNGC等LNG储运装置,液舱晃荡是目前国际上的一个重要的研究热点。晃荡会产生沿舱壁的爬高和冲击,各国研究人员相继提出了各类制荡措施,以确保液舱安全。该文根据港口工程中浮式防波堤的原理,提出在液舱壁面附近安装浮式制荡板的新设想。首先,针对日本学者提出的在液舱中部放置浮式制荡板的方案,建立带有浮式制荡板的二维液舱晃荡数学模型,并与其试验结果进行对比,验证了该数学模型的有效性;然后,采用该数学模型,对文中提出的方案,进行数值模拟和分析,探讨新型浮式制荡装置对制荡效果的影响,为下一步的结构优化和实船应用奠定基础。The membrane-type tank are widely used in LNG storage devices, which include FLNG, FSRU, LNGC, and so on, and sloshing is an international important research focus. The runup along the side wall of the tank and impact will produceby sloshing. Many researchers have proposed a variety of suppress ing measures to ensure the safety of the tank. Based on the principle of wave eliminating, the new idea is put forward in the vicinity of the liquid surface mounting the floating bulkheads. Firstly, the mathematical model of sloshing is established, which is a two-dimensional model with the suppressing float device and is verified preferably compared to the test results of the referen ces. Furthermore, using the mathematical model is to analyze and explore the effect of the suppressing float devices, which lay s the foundation for the optimization and application in the future.

关 键 词：晃荡 薄膜型LNG液舱 浮式制荡板 CFD 

分 类 号：TV131[水利工程—水力学及河流动力学]